COMPOSITION AND METHOD FOR LEVELLING HAIR COLOUR

摘要

The present invention relates to an aqueous composition and a method of levelling hair colour especially the hair lighter coloured or including lightened streaks or bleached streaks or bleached as a whole and after certain period of time contrast - difference in colour - between the re-growth and formerly lightened parts is clearly visible. Compositions comprising at least one fatty acid salt, preferably an in-situ formed ammonium or substituted ammonium salt, and one or more cationic or cationizable surfactants with the general structure wherein R4 is a saturated or unsaturated, straight or branched alkyl group with 8 to 24 C atoms, R5 is a straight or branched alkyl group with 1 to 4 C atoms, A is a group selected from O, and B is selected from wherein R6 and R7 are the same or different is H or an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms and di hydroxyl alkyl with 2 to 4 C atoms, R8, and R9 are the same or different, an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms and di hydroxyl alkyl with 2 to 4 C atoms, Rio is an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms or di hydroxyl alkyl with 2 to 4 C atoms and wherein R4, A and R5 have the above meaning and X is chloride, bromide, methosulfate, or a quaternary ammonium surfactant according to the general formula where R11 is a saturated or unsaturated, branched or non-branched alkyl chain with 8-24 C atoms and R12 is unsaturated or saturated, branched or non-branched alkyl chain with 1 - 24 C atoms and R13 and R14 are lower alkyl chain with 1 to 4 carbon atoms which may be substituted with one or more hydroxyl groups, and X is anion such as chloride, bromide, methosulfate.